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45results about How to "Eliminate processability" patented technology

A copper adulterated aluminum complex flat line and its making method

The invention relates to a copper-clad aluminum composite flat wire and a preparation method thereof, relating to bimetal layered composite materials. The copper-clad aluminum composite flat wire is formed by composition of sandwich layer aluminum and clad copper, and the area ratio of the copper clad is 15 percent to 40 percent. The preparation steps are as follows: copper-clad aluminum composite blanks are directly compounded and formed by adoption of horizontal continuous casting; multi-pass groove rolling and/or multi-pass drawing is performed on the copper-clad aluminum blanks as required; the rolling speed of 3 to 60 meters per minute is adopted, and the single-pass relative percent reduction is 20 percent to 40 percent; or the drawing speed of 2 to 30 meters per minute is adopted, and the single-pass section scalage is 10 percent to 25 percent; under the condition of multi-pass processing and that the overall section scalage of the copper-clad aluminum composite materials reaches 75 percent to 95 percent, low-temperature intermediate annealing is performed on the copper-clad aluminum composite materials; the annealing temperature is 200 to 450 DEG C; the annealing time is 0.5 to 2 hours; the blanks after annealing are rolled or drawn further, and the copper-clad aluminum composite flat wire with required section shape and size is prepared. The invention not only can prepare the high performance copper-clad aluminum composite flat wire but also has high production efficiency.
Owner:UNIV OF SCI & TECH BEIJING

Method for preparing heat-resisting aluminum alloy

The invention discloses a method for preparing a heat-resisting aluminum alloy, and belongs to the field of metal manufacturing. The method comprises the steps that according to the shape of an Al-Fe-V-Si alloy part to be processed, a three-dimensional model is established; layered slice cutting processing is conducted on the three-dimensional model, so that the preset slice thickness in the height direction is formed; a scanning path of each slice is determined according to the cross section profile information of each slice of the three-dimensional model; a layer of pre-alloy powder is laidin accordance with the slice thickness to form a powder layer; the current powder layer is scanned by using a laser beam according to the scanning path, thus a deposition layer corresponding to a slice of the three-dimensional model is made; a control table is controlled to be dropped to the distance of the thickness of a slice, and a layer of pre-alloy powder is laid on the deposition layer againof a formed substrate plate through a powder paving mechanism according to the slice thickness to form a powder layer; and repeating is conducted until processing is finished. The alloy part preparedby the method is high in surface forming precision and good in quality, the research and manufacture cycle can be effectively shortened, the production efficiency is improved, and the production costis reduced.
Owner:BEIJING HANGXING MACHINERY MFG CO LTD

Integrated forming die and method for glass fiber reinforced plastic antenna housing

The invention relates to an integrated forming die and method for a glass fiber reinforced plastic antenna housing. The integrated forming die is composed of a main die (a), embedded circular nuts (b), special screws (c), a glass fiber reinforced plastic framework (d) and an outer die (e). A forming process comprises the following steps: (1) doing preparation work and assembling the dies; (2) preparing raw materials; (3) laying; (4) forming the antenna housing by an autoclave; and (5) releasing the dies and carrying out post-treatment. By adopting the integrated forming die, the embedded circular nuts (b) are synchronously glued and arranged in the forming process of the antenna housing and cracks caused by mechanical drilling when the embedding circular nuts are arranged by adopting a conventional method are avoided; drilling and secondary gluing procedures are eliminated, the operation difficulty is reduced and the splicing effect of the embedded circular nuts (b) is improved; and the main die (a) and the outer die (e) are combined so that the appearance quality requirements and the size precision requirements on the antenna housing are met when the antenna housing is formed and a manual polishing or machining procedure in a conventional forming method is eliminated.
Owner:NO 20 RES INST OF CHINA ELECTRONICS TECH GRP

Thermal formation method of component with complex shape through martensitic steel board

The invention discloses a thermal formation method of a component with complex shape through a martensitic steel board, and belongs to the field of advanced manufacturing and plastic formation of metal. The thermal formation method comprises the following steps: heating a martensitic steel sheet to reach the temperature of 930 to 950 DEG C in order to realize austenitizing; placing the austenitized steel sheet in a pneumatic formatting device; closing a die, and applying a certain die closing force; performing pulse pneumatic loading formation on the surface of the steel sheet until the surface of the steel sheet clings to a concave die so as to obtain the component with the complex shape; quickly quenching the component through a cooling system which is integrated with the die, so as to completely convert austenite into martensite; and performing laser hole punching and side cutting on the formed component so as to obtain the final martensite component. With the adoption of the thermal formation method, the problem of formation of the component with complex shape through an ultrahigh-strength martensite steel sheet can be effectively solved; the conversion rate of a martensite structure in the component can be further increased; the manufacturing cost of martensite steel can be decreased; and the thermal formation method is high in formation efficiency and high in engineering application value.
Owner:NANJING INST OF TECH

Pipe straightening control system and method and application of pipe straightening control method to titanium alloy pipe straightening

The invention belongs to the technical field of titanium alloy pipe straightening, and discloses a pipe straightening control system and method and application of the pipe straightening control methodto titanium alloy pipe straightening. The two ends of a special-shaped pipe are clamped through a clamping device, the left end is fixed, the right end can be moved on a platform, and thus, the pipehas certain tension; and heating is conducted through an electric contact heating mode, residual stress of the titanium alloy special-shaped pipe is removed, meanwhile, under the tension condition, clamping heads at the two ends can be rotated, stress is thoroughly released, torsion of the pipe is eliminated, then, the tension and rotation angle are kept, the special-shaped pipe is cooled to the indoor temperature, fixtures at the two ends are dissembled, and straightening is completed. The torsion angle of the straightened titanium alloy special-shaped pipe is smaller than 1 degree; the straightening mode with drawing and rotating being conducted at the same time is adopted, and the problem that a high-torsion-degree titanium alloy special-shaped pipe is difficult to straighten is effectively solved; and by adopting electric heating straightening, work hardening and residual stress in the machining process of the titanium alloy special-shaped pipe are eliminated, and the problems of residual strain and resilience in the pressure straightening process are solved.
Owner:西安圣泰金属材料有限公司

Hydraulic bulging forming method for colored metal three-way joint

ActiveCN103691795APrevent oxidationReduce or eliminate residual stressAbrasive blastingNonferrous metal
The invention discloses a hydraulic bulging forming method for a colored metal three-way joint. The method comprises the steps of 1, clearing and removing impurities and oil dirt attached to the inner surface and the outer surface of a colored metal pipe blank, and then smearing a lubricating agent on the outer surface of the colored metal pipe blank; 2, selecting a mold, and arranging the colored metal pipe blank with the lubricating agent into a mold cavity of the mold; 3, performing hydraulic bulging forming on the colored metal pipe blank arranged in the mold through a three-way hydraulic machine to obtain a semifinished three-way joint product; 4, performing thermal treatment on the semifinished three-way joint product; 5, repeatedly performing the step 2 and the step 3 on the semifinished three-way joint product subjected to the thermal treatment to obtain a formed piece; 6, performing stress removal thermal treatment on the formed piece; and 7, cutting off a branch pipe plug of the formed piece, then performing groove processing, and finally performing abrasive blasting to obtain a finished three-way joint product. According to the hydraulic bulging forming method disclosed by the invention, oxidization of the colored metal three-way joint in a manufacturing process is effectively prevented, the problems of residual stress and processing hardening in a forming process are alleviated or solved, and the yield of the product is obviously increased.
Owner:XIAN UNITED PRESSURE VESSEL CO LTD

Method for improving usability of biomedical degradable magnesium alloy cardiovascular stent

The invention belongs to the technical field of biological materials and in particular provides a method for improving usability of a biomedical degradable magnesium alloy cardiovascular stent. The method is characterized by comprising the following steps of: firstly pre-press-holding the magnesium alloy cardiovascular stent until the diameter is 1.05-1.25 times the finally press-holding diameter, then carrying out full annealing treatment on the stent, treating the surface of the stent or coating a drug-loading coating after annealing treatment, then continuing press-holding the stent till the preset dimension so that the stent is closely attached to a sacculus and carrying out subsequent packaging and sterilizing. The method has the beneficial effects that the maximum stress of the press-holding expansion process, the residual stress of the stent after press-holding expansion and expansion resilience can be reduced by introducing the annealing process; the stress safety of the stent and the implantation success rate can be improved by reducing the maximum stress; by reducing the residual stress, the stress corrosion tendency and degradation rate of the stent are reduced and the supporting time of the stent is prolonged; and by reducing expansion resilience, the attachment properties of the stent and blood vessels are improved and the probability of vascular restenosis caused by stent implantation is reduced.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Bearing outer ring raceway grinding monitoring device

The invention relates to a bearing outer ring raceway grinding monitoring device, which is designed in order to solve the technical problem of uneven machining quality of a product existing in a conventional machine tool because the machining procedure and technological parameters can be freely mastered by an operator. The design points are that: the main body of the bearing outer ring raceway grinding monitoring device is a programmable controller; and the programmable controller is provided with a password heuristic program, a password setting program, a technological parameter limit value setting program and a technological parameter value and technological parameter limit value comparison program. An input end of the bearing outer ring raceway grinding monitoring device is connected with a machining procedure and technological parameter setting device of the machine tool, while the output end is connected with a machining procedure and technological parameter storage device of the machine tool. The device has a simple structure, is convenient to use and operate, effectively prevents the operator from maliciously setting the machining procedure and the technological parameter of the machine tool, improves the machining quality of the product and is suitable to be installed on various machine tools of the same type.
Owner:田建军

Short-process and zero-drainage production method of refining industrial hemp

ActiveCN109023538ASave healthOmit openingVegetable materialMechanical fibre separationFiberYarn
The present invention relates to a short-process and zero-drainage production method of refining industrial hemp. The scutched hemp is subjected to drafting, purification and carding processing through a jute garnett and a continuous carding machine and is subjected to one-bath degumming, bleaching and softening processing through a successive cylinder without water drainage; the degumming and thebleaching are performed in the same bath, the bath ratio is 1:5-20, the bleaching temperature in the high-temperature and the high-pressure bleaching cylinder is 98-135 DEG C, and the bleaching holding time is 5-60 minutes; the one-bath processing of the degumming and the bleaching is performed for 2-3 times; the scutched hemp is subjected to degumming and the bleaching, then drying, softening processing through the successive cylinder without water drainage, and microwave drying or low-temperature drying after the softening processing to become a finished product. The whiteness of the refining industrial hemp is larger than 60%, the separation degree of the industrial hemp raw materials below 36 Nms after processing is larger than 1500, and the separation degree of the industrial hemp raw materials above 36 Nms after processing is larger than 2000. The short-process and zero-drainage production method of refining industrial hemp can be directly used for fiber blending such as cotton,tel tencel, modal, mucilage glue and wool to manufacture blended yarns containing hemp.
Owner:苏州麻朵纺织科技有限公司 +1

Serrated steel-concrete shear connector

The invention provides a serrated steel-concrete shear connector, and belongs to the field of civil engineering structural engineering. The serrated steel-concrete shear connector comprises a steel web, and streamline-shaped serrated shear connectors are formed by cutting operation at the top end of the steel web through a numerical control machine tool. The serrated steel-concrete shear connector comprises the serrated shear connectors, the serrated shear connectors are located on the steel web, and the serrated shear connectors are basically respectively of a streamline shape. The serrated steel-concrete shear connector comprises shear reinforcements which are arranged between the adjacent serrated shear connectors, one or more shear reinforcements can be arranged at the interval between every two adjacent serrated shear connectors, and the shear reinforcements are vertically located at inflection points of cutting lines. The serrated steel-concrete shear connector comprises concrete, the concrete is poured in a closed space formed by formworks and the steel web, and the shear reinforcements and the serrated shear connectors need to be poured into the concrete. The serrated shear connectors are innovatively directly arranged on the steel web, the machining, manufacturing and construction processes of traditional shear connectors are omitted, construction is convenient and quick, and connecting transmission between steel and concrete is reliable and effective.
Owner:TONGJI UNIV

Equipment system for laminating and packaging LED based on rolling type thermoplastic resin light conversion body

ActiveCN106469774AOvercoming light extraction efficiencyOvercome the excellent rateSemiconductor devicesProcess equipmentMechanical engineering
The invention relates to an equipment system for laminating and packaging an LED based on a rolling type thermoplastic resin light conversion body. The characteristics lie in that the equipment system comprises a collaborative rolling shape-fixing and cutting device used for performing rolling shape-fixing and rolling cutting on a light conversion diaphragm so as to form a light conversion diaphragm array and a rolling laminating device used for laminating the light conversion diaphragm array and an LED flip chip array; the collaborative rolling shape-fixing and cutting device and the rolling laminating device sequentially form collaborative linkage process equipment; the collaborative rolling shape-fixing and cutting device comprises a rolling device 1 with a bump array and a rolling device 2 with a groove array which are oppositely arranged in an aligned manner; and the rolling laminating device comprises a rolling device 4 with a groove array and a rolling device 3 with the rolling surface being a smooth surface which are oppositely arranged in an aligned manner. The equipment system meets requirements of a technological method suitable for laminating and packaging the LED based on the thermoplastic resin light conversion body, so that the production efficiency and the superior quality product rate of industrial batch LED packaging are improved.
Owner:JIANGSU CHERRITY OPTRONICS CO LTD
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